Hi Ray ~ In my experience with 23andMe I only got proof positive about ancestry history, not about anything along the medical lines. A couple of things to know is that first, the person answering the questions may not know definitively the answer, and also you can skip answering anything you don't want to disclose or feel you can't be sure of, and that may skew the outcome that you are hoping for. Still, I'd do it again - and I guess I still am since I respond to most of the update questionnaires.